make: translate using gettext, rather than the unmaintainable catgets

*** 14,18 ****
--- 14,23 ----
  MAKE_INCLUDE= $(SRC)/cmd/make/include
  $(RELEASE_BUILD)MAKE_DEFS += -DNDEBUG
  CFLAGS += $(CCVERBOSE)
  CPPFLAGS += -I$(MAKE_INCLUDE) $(MAKE_DEFS)
  
+ # So that it's set even for the libraries we build
+ TEXT_DOMAIN = SUNW_OST_OSCMD
+ 
+ $(POFILE): $(POFILES)
+         $(CAT) $(POFILES) > $@